Search Engine Relationship Chart® - Please, please, please refrain from using "Search Engine Relationship Chart" on your web pages except as links to our site. This specific term is protected by an issued trademark - Registration Number 2,937,154. This trademark is protected by International Treaty (World Trade Organization) covering 123 countries (most of you). This chart is maintained free of charge and is available to all for personal use. There is no need to infringe this trademark, so please do not. Thank you in advance for your cooperation.